The issues Child trafficking, exploitation and modern slavery Child trafficking statistics Global trafficking statistics An estimated 50 million people were living in situations of modern slavery on any given day in 2021, according to the latest Global Estimates of Modern Slavery. Of these people, approximately 27.6 million were in forced labour and 22 million were in forced marriage. Walk Free Foundation, Global Slavery Index, 2021 More than 12 million of all people in modern slavery are children, and women and girls account for over half of them (54%). Walk Free Foundation, Global Slavery Index, 2021 UK trafficking statistics A total of 8,156 referrals were made to the National Referral Mechanism reporting exploitation entirely within the UK between October 2023 and September 2024. National Crime Agency, Modern Slavery and Human Trafficking, 2025 A total of 4,415 referrals [to the National Referral Mechanism] were for UK nationals, and in 58% of referrals, the potential victim reported exploitation as a child. National Crime Agency, Modern Slavery and Human Trafficking, 2025 79% of referrals [to the National Referral Mechanism] of UK nationals involve potential victim reporting having been exploited when under 18. National Crime Agency, Modern Slavery and Human Trafficking, 2025 Manage Cookie Preferences